堆栈(抽象数据类型)
阳极
质子交换膜燃料电池
阴极
歧管(流体力学)
进气歧管
入口
计算流体力学
流量(数学)
压力降
机械
膜
材料科学
化学
计算机科学
物理
机械工程
热力学
电极
工程类
物理化学
程序设计语言
内燃机
生物化学
作者
Yuzhen Xia,Yiwei Hu,Guilin Hu,Hangwei Lei,Jiazhou Lu,Zichen Wang,Qianpu Wang
标识
DOI:10.1016/j.ijhydene.2022.11.131
摘要
The size and configuration of manifold can affect the flow characteristics and uniformity in proton exchange membrane fuel cell (PEMFC) stack; then its efficiency and service life. Based on the simulation results of a single fuel cell considering electrochemical reaction, a stack model with 300 porous media is established to numerically investigate the performances of a large commercial PEMFC stack. The effects of manifold width and configuration type on the pressure drop and species concentration are studied by computational fluid dynamics (CFD). The results show that the uniformity for most cases of U-type configuration is better than those of Z-type configuration. For U-type configuration, a very good uniformity can be obtained by selecting anode inlet manifold width of 20 mm and anode outlet manifold in range from 25 to 30 mm; the uniformity is bad for all cathode inlet manifold width, relatively better uniformity can be achieved by adjusting cathode outlet manifold width. For Z-type configuration, bad uniformity is found for cathode inlet and outlet manifold with all width; a relatively good uniformity can be obtained with suitable anode manifold width of 35 mm. The research can provide some references to improve gas distribution uniformity in large PEMFC stacks.
科研通智能强力驱动
Strongly Powered by AbleSci AI